/**
 * $Revision$
 * $Date$
 *
 * Copyright 2003-2007 Jive Software.
 *
 * All rights reserved. Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.jivesoftware.smackx.workgroup.settings;

import org.jivesoftware.smack.packet.IQ;
import org.jivesoftware.smack.provider.IQProvider;
import org.xmlpull.v1.XmlPullParser;

import java.util.ArrayList;
import java.util.Collection;
import java.util.Iterator;
import java.util.List;

public class ChatSettings extends IQ {

	/**
	 * Defined as image type.
	 */
	public static final int IMAGE_SETTINGS = 0;

	/**
	 * Defined as Text settings type.
	 */
	public static final int TEXT_SETTINGS = 1;

	/**
	 * Defined as Bot settings type.
	 */
	public static final int BOT_SETTINGS = 2;

	private List settings;
	private String key;
	private int type = -1;

	public ChatSettings() {
		settings = new ArrayList();
	}

	public ChatSettings(String key) {
		setKey(key);
	}

	public void setKey(String key) {
		this.key = key;
	}

	public void setType(int type) {
		this.type = type;
	}

	public void addSetting(ChatSetting setting) {
		settings.add(setting);
	}

	public Collection getSettings() {
		return settings;
	}

	public ChatSetting getChatSetting(String key) {
		Collection col = getSettings();
		if (col != null) {
			Iterator iter = col.iterator();
			while (iter.hasNext()) {
				ChatSetting chatSetting = (ChatSetting) iter.next();
				if (chatSetting.getKey().equals(key)) {
					return chatSetting;
				}
			}
		}
		return null;
	}

	public ChatSetting getFirstEntry() {
		if (settings.size() > 0) {
			return (ChatSetting) settings.get(0);
		}
		return null;
	}

	/**
	 * Element name of the packet extension.
	 */
	public static final String ELEMENT_NAME = "chat-settings";

	/**
	 * Namespace of the packet extension.
	 */
	public static final String NAMESPACE = "http://jivesoftware.com/protocol/workgroup";

	public String getChildElementXML() {
		StringBuilder buf = new StringBuilder();

		buf.append("<").append(ELEMENT_NAME).append(" xmlns=");
		buf.append('"');
		buf.append(NAMESPACE);
		buf.append('"');
		if (key != null) {
			buf.append(" key=\"" + key + "\"");
		}

		if (type != -1) {
			buf.append(" type=\"" + type + "\"");
		}

		buf.append("></").append(ELEMENT_NAME).append("> ");
		return buf.toString();
	}

	/**
	 * Packet extension provider for AgentStatusRequest packets.
	 */
	public static class InternalProvider implements IQProvider {

		public IQ parseIQ(XmlPullParser parser) throws Exception {
			if (parser.getEventType() != XmlPullParser.START_TAG) {
				throw new IllegalStateException(
						"Parser not in proper position, or bad XML.");
			}

			ChatSettings chatSettings = new ChatSettings();

			boolean done = false;
			while (!done) {
				int eventType = parser.next();
				if ((eventType == XmlPullParser.START_TAG)
						&& ("chat-setting".equals(parser.getName()))) {
					chatSettings.addSetting(parseChatSetting(parser));

				} else if (eventType == XmlPullParser.END_TAG
						&& ELEMENT_NAME.equals(parser.getName())) {
					done = true;
				}
			}
			return chatSettings;
		}

		private ChatSetting parseChatSetting(XmlPullParser parser)
				throws Exception {

			boolean done = false;
			String key = null;
			String value = null;
			int type = 0;

			while (!done) {
				int eventType = parser.next();
				if ((eventType == XmlPullParser.START_TAG)
						&& ("key".equals(parser.getName()))) {
					key = parser.nextText();
				} else if ((eventType == XmlPullParser.START_TAG)
						&& ("value".equals(parser.getName()))) {
					value = parser.nextText();
				} else if ((eventType == XmlPullParser.START_TAG)
						&& ("type".equals(parser.getName()))) {
					type = Integer.parseInt(parser.nextText());
				} else if (eventType == XmlPullParser.END_TAG
						&& "chat-setting".equals(parser.getName())) {
					done = true;
				}
			}
			return new ChatSetting(key, value, type);
		}
	}
}
